I'm afraid you have some looming problems with your fish stocking. Starting with the question, I would suspect the gourami to be annoyed with the Blood Parrot more than the Bala Shark might be. This is not a recommended matching.

But having said that, as the Bala grow, they will be very aggressive in such a small space. They attain 14 inches, some authors say 16 inches, and a group needs a 6-foot tank at minimum.

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The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.[unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]

Well this is just for while they are young i have a 150 Gallon tank that i haven't set up yet for them when they get larger. I hate the Gourmai the mean little buggers. Well not all o fthem 2 get along quite nice but the largest one is mean. Haha

Well this is just for while they are young i have a 150 Gallon tank that i haven't set up yet for them when they get larger. I hate the Gourmai the mean little buggers. Well not all o fthem 2 get along quite nice but the largest one is mean. Haha

That is perfectly normal gourami behaviour. Males (it is likely a male) are very territorial, and can be highly aggressive to other males and sometimes to other gourami. More than one member here has told us sad stories of a gourami that was "peaceful" until one day it started killing every other gourami in sight. I don't know your gourami species, but the common "medium/large" species are best in groups of one male to 2-3 females for this very reason. Though again, sometimes a particular male will attack females. They need lots of plants, wood, etc. for cover or the stress may kill them if the fish doesn't.

Glad the larger tank is in the works. Bala Shark are beautiful fish, but many do not plan their needs. I'm glad you are thinking ahead.

I would steer clear of the Red Parrot though; they are rather shy (esp for a cichlid) and boisterous tankmates like the playful sharks in such a small space will not be welcomed.

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.[unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]